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Long-term Debt (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Long-Term Debt Details 1    
Convertible notes $ 16,545 $ 16,545
Non-recourse debt 166,381 211,352
Total debt 182,926 227,897
Less current portion 6,981 19,267
Total long-term debt $ 175,945 $ 208,630